Trowser is a browser for large line-oriented text files (such as debug traces). It's meant as an alternative to "less". Compared to less, trowser adds color highlighting, a persistent search history, graphical bookmarking, separate search result windows, and flexible skipping of input from pipes to STDIN. Trowser has a graphical interface, but is designed to allow browsing via the keyboard at least to the same extent as less. Key bindings and the cursor positioning concept are derived from vim.
Do178Builder is a documentation tool used throughout the software/hardware development effort, helping to produce the DO-178B/254 documentation much less painfully. A major obstacle to creating airborne products, for smaller developers, is the necessity to qualify the software per RTCA/DO-178B, or hardware per RTCA/DO-254. Without this qualification, airborne products cannot be deployed.